Edge-turning machine



June 22,1937. H. J. HELLER 2,084,395

EDGE TURNING MACHINE Filed June 16, 1956 2 Sheets-Sheet 1 EEG-1 IN V EN TOR.

H. J. HELLER EDGE TURNING MACHINE Filed June 16, 1936 June 22, 1937.

- 2 Sheets-Sheet"? INVENTOR. J'fezBeztfl. Jfeffe;

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Patented. June 22, 1937 ATENT OFFIQE EDGE-TURNING MACHINE Herbert .J. Heller, New York, N. Y., assignor to H. Weiss & Company, New York, N. Y., a copartnership Application June 16,

Claims.

My invention relates to machines for shaping sheet metal and pertains particularly to such machines as are used for turning edges to form flanges on sheet metal plates.

5 One of the objects of my invention comprises producing an edge-turning machine which is simple and inexpensive yet fully effective and efflcient for all classes of work for which such machines are employed.

Another object comprises producing an edgeturning machine by means of which a flange may be turned in small reentrant openings, reentrant apertures having small openings thereto, or apertures of small diameter located wholly within the l-5 area of sheet metal plates whether such plates are large or small.

A further object comprises producing an edgeturning machine employing a forming element which may be adjusted for optimum operative wiposition and to compensate for wear thereof.

A still further object comprises producing an edge turning machine having a forming element of substantially uniform cross-section substantially encircling one of the rolls to ensure lon- -gevity for the element.

I accomplish all of the above noted desirable results and others which will hereinafter be apparent by means of the novel structure, combination, inter-relation and arrangement of parts which will be hereinafter more specifically described with reference to the accompanying drawings forming a part of this specification and in which like numerals designate corresponding parts throughout.

In the accompanying drawings:

Fig. 1 is a partially broken, sectional elevation of one embodiment of my invention;

Fig. 2 is a broken, sectional view of the same taken on the line 22 of Fig. 1;

Fig. 3 is a partially broken top plan view of the same; and

Fig. 4. is a partially broken, sectional plane view of the same taken on the line 4-4 of Fig. 1.

Referring now to the drawings in which I have illustrated one embodiment of my device, and particularly to Figs. 1, 2 and 3. The housing I is preferably cast of metal in the form shown and provided with a top or cover 2 secured thereto by machine screws, as shown. A boss in the housing I serves as a journal for a hollow shaft 3, one extremity of which bears a spur gear l and a bevel gear 5. A stub shaft 8 is provided with a spur gear 9 in mesh with spur gear 4 and shaft 8 is carried in a journal 6 which is car- .ried in turn by means of a U-shape yoke l2 ro- 1936, Serial No. 85,453

tatably supported by shaft l3 supported by the housing I. The lower extremity I4 of journal 6 is given a rectangular form as shown and the journal and shaft carried thereby are adjustable by means of a screw I0 carried in the housing I. A spring II, one extremity of which is secured to the yoke I2 and the other to the housing I, serves to hold the rectangular portion It of the journal at all times against the end of the adjusting screw Ill. The purpose of this adjustment will be explained hereinafter.

A cross-shaft I1 is journaled in a boss provided in the housing I and carries a bevel gear iii in mesh with bevel gear 5 carried by hollow shaft 3. These bevel gears have preferably a rotio of 11 and the shafts 3 and B may be rotated by means of a handle, not shown, secured to the extremity of cross-shaft I'I. shafts 3 and 8 may be rotated through a reducing gearing by means of the shaft I8, journaled in the housing I, and the spur gears I9 and 20. These as shown provide a gear reduction to facilitate rotating shafts 3 and 8 by means of handle 3i. The extremities of shafts 3 and 8 are provided with taper flutings or corrugations as indicated and forming rollers 2| and 22 are forced thereon respectively in a manner to ensure that the rollers will not turn on the shafts. The rollers 2! and 22 are, as shown, knurled and provided with reverse tapers so that the flange formed thereby will be substantially perpendicular to the plane of the sheet of metal in which the flange is made. The rolls are adjustable in their distance from each other to accommodate different thicknesses of metal being flanged by means of the screw Ill whereby the journal 6 and shaft 8 may be adjusted with respect to hollow shaft 3 which may be considered a driving shaft with respect to stub shaft 8. A gauge 24 is adjustable by means of the right and left hand threaded screws 29 and 30 carried by the housing I to predetermine the height of the flange being formed.

A support rod 28 extends through the hollow driving shaft 3 and is rigidly secured as shown in the top plate 2 of the housing I. A work table 25 is adjustably secured by means of set screw 21 to the extended portion of the support rod 23. The work table carries a clamp 26 by means of which the machine may be secured to a work bench.

An annular forming element 23 substantially encircles roll ZI as shown in Fig. 4 and an extremity 32 of this element, is operativelypositioned with respect to the periphery of the rolls If desired,

2i and 22 to cooperate therewith in producing the flange as hereinafter described. The form ing element 23 is preferably made of high grade tool steel and is rigidly secured in a recess in the,

work table 25 in any well known manner such as by heat shrinking. The forming element 23 is provided with the proper contour for the purpose intended and the contour is 'uniform throughout the entire length of the 1 element. Therefore, as the forming edge 32 of the element wears, the work table 25 carrying the forming element may be rotated on the rod 28 to maintain the optimum operative position for the forming edge 32. rying the rod 28 may, if desired, be rotated to accomplish the same purpose. Further, the relative rotation'between the rod 28 and the work table 25 may be utilized to adjust'the forming edge 32 of the forming element 23 to optimum operative position for different kinds or thicknesses of metal. a r 1 d It will be obvious that, as the cross-section of the element 23 is uniform throughouhlongevity of the element is achieved and, further, that the forming edge 32 may be adjusted to compensate for wear. or for optimum operative position for different thicknesses or different kinds of material being operated on. I

It will be further obvious'tha-t as the'support rod 28' is the only connecting medium between the housing I and the work table, that reentrant apertures in metal sheets having openings thereto only sli htly larger than the diameter of the a support rod 28 maybe easily flanged. Further,

that the work table 25 may be removed andrthe support rod 28 inserted in openings only slightly larger in diameter than the forming element 23 when such openings are located within the area of large or small metal sheets or in apertures having smaller openings thereto than the discribed, so that the metal is tightly gripped between them and the height gauge isiset for the height of flange desired. The rolls are rotated in a direction to draw the edge of the sheet against the forming edge 32 of the forming element 23 which functions to upturn a portion of'the sheet for passage between the'rolls to produce the desired flange. The rolls maybe rotated either through 'the reducing gears by means of handle 31 and shaft 18, or directly by means of a handle placed on shaft I'L. The

flange may also be started if the metal is not.

too thick without turning up a portion thereof as just described,- as the contour of 'the edge 32 .of the forming element'is such as to;curl the edge of the 'mctalsheet forced against it to a height sufficient for the 'rolls to obtain an initial grip thereon. V r I It will be apparent from the foregoing that my invention provides an edge-turning machine which is simple and inexpensive yet fully effective and eflicient for all classes of work for whichsuchmachinemay be employed.

It will be further apparent that by means Of course, the housing I car,-'

of my invention flanges may be turned in small reentrant openings, reentrant apertures having small openings thereto, or apertures of small diameter located wholly within the area of sheet metal plates whether such plates are large 0 small.

.It will be further apparent that the rom'mg edge of the annular forming element may be adjusted for optimum operative position for varlous kinds or thicknesses of material and to compensate for wear thereof, and that, further, the forming element being'of substantially uniform. cross-section and substantially encircling one of the rollsensures longevity for the element. It will, be noted, further, that the housing I except the extremities thereof and that the workman using the device is thus protectedfrom accidental injury. 7 7

While I have shown and described, by way of example only, one embodiment of my inven tion, it will be apparent that various changes may be made therein. without-departirigfroin the intended scope and spirit of the'invention.

: I do not therefore desire to limit myself tothe foregoing except as may pointed out in the appended claims.

Having thus completely described my invenl tion, what I claim as new and original and dc sire to secure by United States Letters Patent 7 1. An edge-turning machine comprising, a"

hollow shaft having agear and roll thereon, a

stub shaft having a gear in mesh withthe gear" on said hollow shaft and stroll adjacentto said first roll, a housing for said shafts and gears, a 5

support rod extending through said hollow shaft,

rigidly secured to said housing and extending 1 therethrough, a work table adjustably secured to the extended portion of said support r'od, said rod being the sole supporting means between'said housing and said work table, means associatedwith one of said rolls for imparting rotary 'motion thereto to draw a sheet of metal between said rolls and said work table so that-aportion thereof passes between said. rolls, a forming-telement having an extremity thereof operatively po-' sitioned between the periphery of said roll's' forcooperating with said rolls to 'turn. the edge of the metal passingxtherebetween substantially at right angles with the planeof the balance-of the sheetofmet'al; 7 :1

2. An edge-turning. machine icomprising aw hollow shaft having a gear and roll thereon, a

stub shaft having a gear in mesh with'the gear on said hollow shaft and a roll adjacent to said first roll, a. housing'for saidshaftsand gears; a

. support rod extending through said hollow shaft,

rigidly secured to said "housing :and ,extendingf therethrough, a work table adjustablysecured'to the extended portion of saidsupport rod,-.means associated with one of said rolls for imparting rotary motion thereto to drawa sheet-of metal between said rolls and saidwork table sothat-a portion thereof passes between said rolls-.58, forming element of substantially uniform cross-,

section substantially encircling one of "said rolls} and having an extremity thereof positioned operatively between the periphery of said rolls for cooperating with said rolls toiturn the edgeof the metal passing therebetween substantiallyat right angles with the plane of the balance of,

the sheet of metals 3. An edge-turning machine comprising, a 7 hollow driving shaft having a. gearandi-groll and cover 2 enclose all of the gearing and shafts thereon, a stub shaft having a gear in mesh with the gear on said driving shaft and a roll adjacent said first mentioned roll, a housing for said shafts and gears, a supporting rod extending through said hollow driving shaft, rigidly secured to said housing and extending therethrough, a work tab-1e adjustably secured to the extension of said supporting rod, means associated with one of said rolls for imparting rotary motion thereto to draw a sheet of metal between said rolls and said work table so that a portion thereof passes between said rolls, an annular forming element substantially encircling one of said rolls and being rotatable around said roll whereby the forming edge thereof may be adjusted with respect to the periphery of said rolls for optimum operative position and to compensate for wear of said element and said forming edge cooperating with said rolls to turn the edge of the metal passing therebetween substantially at right angles to the plane of the balance of the sheet.

4. An edge-turning machine comprising, a hollow driving shaft having a gear and roll carried thereon, a stub shaft having a gear in mesh with the gear on said driving shaft and a roll adjacent said first mentioned roll, a housing for said shafts and gears, a support rod extending through said hollow driving shaft, rigidly secured to said housing and extending therethrough, a work table adjustab-ly secured to said support rod, means associated with one of said rolls for imparting rotary motion thereto to draw a sheet of metal between said rolls and said work table so that a portion thereof passes between said rolls, a forming element substantially encircling one of said rolls and carried by said work table and rotatable with said work table about said support rod to permit adjustment of the forming edge thereof with respect to the peripheries of said rolls to compensate forwear of said edge, said forming edge cooperating with said rolls to turn the edge of the metal passing therebetween substantially at right angles with the plane of the balance of the sheet of metal.

5. An edge-turning machine comprising, a hollow driving shaft having a spur gear and a roll carried thereon, a stub shaft having a spur gear in mesh with the spur gear on said driving shaft and a roll adjacent to said first mentioned roll, a, housing for said shafts and gears, means for moving one of said shafts to adjust the distance between the rolls carried by said shafts, a support rod extending through said hollow driving shaft, rigidly secured to said housing and extending therethrough, a work table adjustably secured to said support rod, means associated with one of said shafts and rolls for imparting rotary motion thereto through reducing gears to draw a sheet of metal between said rolls and said work table so that a portion thereof passes between said rolls, an annular forming element substantially encircling one of said rolls and having an extremity thereof op-eratively positioned between the peripheries of said rolls for cooperating with said rolls to turn the edge of the metal passing therebetwee-n substantially at right angles to the plane of the balance of the sheet of metal.

HERBERT J. HELLER. 

